html,
body,
p,
ol,
ul,
li,
dl,
dt,
dd,
blockquote,
figure,
fieldset,
legend,
textarea,
pre,
iframe,
hr,
h1,
h2,
h3,
h4,
h5,
h6 {
     margin: 0;
     padding: 0;
}
​ h1,
h2,
h3,
h4,
h5,
h6 {
     font-size: 100%;
     font-weight: normal;
}
​ ul {
     list-style: none;
}
​ button,
input,
select {
     margin: 0;
}
​ html {
     box-sizing: border-box;
}
​ *,
*::before,
*::after {
     box-sizing: inherit;
}
​ img,
video {
     height: auto;
     max-width: 100%;
}
​ iframe {
     border: 0;
}
​ table {
     border-collapse: collapse;
     border-spacing: 0;
}
​ td,
th {
     padding: 0;
}
